Cooperative learning strategies have occupied a prominent place among language teaching methodologies.This study quantitatively validates the effect of cooperative learning on the reading comprehension performance in EFL classes of Chinese learners of Northeastern University at Qinhuangdao.67 first-year students from two classes, with an average age between 18-20 years, were tested with a placement test and a reading comprehension test.The tests results showed that the students from the two classes have the same English language proficiency level and they had no significant difference in their reading comprehension.Then one class was chosen to be the experimental class and the other control class.Through one terms training of cooperative learning strategies on the experimental class, a reading comprehension test was finally administered to both of the two classes.The findings substantiated the benefits of cooperative learning as an effective way to enhance learners achievement, motivation as well as to reduce their anxiety in class.